Excited-state proton transfer and excited-state de-hydrogen bonding of the push–pull styryl system

The excited-state reaction of push–pull styryl system was studied in this work. In the excited state, compounds of 2-StP-NMe 2, 2-StQ-NMe 2, 4-StQ-NMe 2 and 4-StP-NMe 2 possess a sufficiently large acidity change for the proton transfer process to occur. For compounds 2-StT-NMe 2 and 2-StN-NMe 2 the...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 2005-11, Vol.415 (4), p.217-222
Main Authors: Wang, Shun-Li, Gao, Guo-Yi, Ho, Tong-Ing, Yang, Li-Yu
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The excited-state reaction of push–pull styryl system was studied in this work. In the excited state, compounds of 2-StP-NMe 2, 2-StQ-NMe 2, 4-StQ-NMe 2 and 4-StP-NMe 2 possess a sufficiently large acidity change for the proton transfer process to occur. For compounds 2-StT-NMe 2 and 2-StN-NMe 2 the acidity change is too small to induce the proton transfer process. A new type of excited-state de-hydrogen bond (ESDHB) process was observed in this study. It is possible to explore the polarity and HB effect of solvent simultaneously by using the ESDHB mechanism.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2005.08.146